It seems many sports have a system but it isn't always followed. It may start with team owners and then voting to push it forward or 'commissioner' role may just implement something arbitrarily, something where it follows a convoluted path where other sports have a very rigid and set path for a rule change proposal.
How does MLB fall into the gamut of rule changes in the context of a set process?
When there is a rule change in MLB does it it follow a set process that occurs the same way every single time?